Average Error: 24.8 → 5.8
Time: 9.0s
Precision: binary64
\[\]
↓
\[\]
↓
double code(double x, double y, double z, double t, double a) {
	return ((double) (((double) (((double) (x * y)) * z)) / ((double) sqrt(((double) (((double) (z * z)) - ((double) (t * a))))))));
}

↓
double code(double x, double y, double z, double t, double a) {
	double VAR;
	if ((z <= -1.639453879920885e+151)) {
		VAR = ((double) (x * ((double) (y * ((double) (z / ((double) (((double) (0.5 * ((double) (t * ((double) (a / z)))))) - z))))))));
	} else {
		double VAR_1;
		if ((z <= 4.277915885762825e+70)) {
			VAR_1 = ((double) (x * ((double) (((double) (y * ((double) (((double) cbrt(z)) * ((double) (((double) cbrt(z)) / ((double) (((double) cbrt(((double) sqrt(((double) (((double) (z * z)) - ((double) (t * a)))))))) * ((double) cbrt(((double) sqrt(((double) (((double) (z * z)) - ((double) (t * a)))))))))))))))) * ((double) (((double) cbrt(z)) / ((double) cbrt(((double) sqrt(((double) (((double) (z * z)) - ((double) (t * a))))))))))))));
		} else {
			VAR_1 = ((double) (x * ((double) (y * ((double) (z / ((double) (z - ((double) (0.5 * ((double) (t * ((double) (a / z))))))))))))));
		}
		VAR = VAR_1;
	}
	return VAR;
}

Error
Bits error versus x
Bits error versus y
Bits error versus z
Bits error versus t
Bits error versus a
Try it out
Your Program's Arguments
Results
Enter valid numbers for all inputs
Target
Original24.8
Target7.4
Herbie5.8
\[\]
Derivation
  1. Split input into 3 regimes
  2. if  z  < -1.6394538799208849e151
    1. Initial program 53.8
      \[\]
    2. Simplified53.2
      \[\leadsto \]
    3. Taylor expanded around -inf 5.6
      \[\leadsto \]
    4. Simplified0.9
      \[\leadsto \]
    if -1.6394538799208849e151 <  z  < 4.27791588576282506e70
    1. Initial program 10.8
      \[\]
    2. Simplified8.7
      \[\leadsto \]
    3. Using strategy rm
    4. Applied add-cube-cbrt9.5
      \[\leadsto \]
    5. Applied add-cube-cbrt9.1
      \[\leadsto \]
    6. Applied times-frac9.1
      \[\leadsto \]
    7. Applied associate-*r*8.4
      \[\leadsto \]
    8. Simplified8.5
      \[\leadsto \]
    if 4.27791588576282506e70 <  z 
    1. Initial program 40.3
      \[\]
    2. Simplified37.5
      \[\leadsto \]
    3. Taylor expanded around inf 5.6
      \[\leadsto \]
    4. Simplified2.3
      \[\leadsto \]
  3. Recombined 3 regimes into one program.
  4. Final simplification5.8
    \[\leadsto \]
Reproduce
herbie shell --seed 2020179 
(FPCore (x y z t a)
  :name "Statistics.Math.RootFinding:ridders from math-functions-0.1.5.2"
  :precision binary64

  :herbie-target
  (if (< z -3.1921305903852764e+46) (neg (* y x)) (if (< z 5.976268120920894e+90) (/ (* x z) (/ (sqrt (- (* z z) (* a t))) y)) (* y x)))

  (/ (* (* x y) z) (sqrt (- (* z z) (* t a)))))